We would all like our dogs to get along with each other but there are some dog breeds that that is impossible. These dogs usually have a strong territorial impulse which makes them not like other dogs encroaching on their territory. So if you already have a dog and wish to get another to keep it company you should check this list of dogs that are not so dog-friendly. Make sure that your dog is not on it and that the one you are considering on getting is also not on it.